所周知，在Ubuntu 9.10中還了新版本的gdm，所以不再像之前那樣簡單的更換登錄界面
具體方法參考
1. Change the gdm background picture
The current settings
sudo -u gdm gconftool-2 –get /desktop/gnome/background/picture_filename
Set a new background picture
sudo -u gdm gconftool-2 –set –type string –set /desktop/gnome/background/picture_filename /data/pictures/Grassy.jpg
2. The gdm gtk theme
The current settings
sudo -u gdm gconftool-2 –get /desktop/gnome/interface/gtk_theme
Set a new gtk theme (you can find them in /usr/share/themes)
sudo -u gdm gconftool-2 –set –type string –set /desktop/gnome/interface/gtk_theme Redmond
3. The gdm icon theme (changes the look of the computer icon … icon above the hostname)
The current settings
sudo -u gdm gconftool-2 –get /desktop/gnome/interface/icon_theme
Set a new icon theme (You can find them in /usr/share/icons)
sudo -u gdm gconftool-2 –set –type string –set /desktop/gnome/interface/icon_theme Tangerine
and you can edit the file
/usr/share/gconf/schemas/gdm-simple-greeter.schemas
if you don’t like the computer icon. Change the icon (<default>coputer</default>) in the section
<schema>
<key>/schemas/apps/gdm/simple-greeter/logo_icon_name</key>
<applyto>/apps/gdm/simple-greeter/logo_icon_name</applyto>
<owner>gdm-simple-greeter</owner>
<type>string</type>
<default>computer</default>
<gettext_domain>gdm</gettext_domain>
<locale name=”C”>
<short>Icon name to use for greeter logo</short>
<long>Set to the themed icon name to use for the greeter logo.</long>
</locale>
</schema>
4. The gdm user icon
This does not work
sudo -u gdm gconftool-2 –get /schemas/apps/gdm/simple-greeter/logo_icon_name
I haven’t found it yet … but at least we could overwrite
/usr/share/icons/gnome/scalable/stock/generic/stock_person.svg
but this icon may be important for other applications … so don’t do it.
solved: you can set the user icon for your user with
/usr/bin/gnome-about-me